package com.shimao.celnet.payment;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.retry.annotation.EnableRetry;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

@SpringBootApplication
@EnableTransactionManagement
@EnableAsync
@EnableRetry
@MapperScan(basePackages = "com.shimao.celnet.payment.mapper")
public class ShimaoPaymentApplication extends SpringBootServletInitializer {

	public static void main(String[] args) {

		SpringApplication.run(ShimaoPaymentApplication.class, args);
	}
	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
		return application.sources(ShimaoPaymentApplication.class);
	}
	/*
	* 配置线程池供异步方法调用
	核心线程数10：线程池创建时初始化的线程数
	最大线程数20：线程池最大的线程数，只有在缓冲队列满了之后才会申请超过核心线程数的线程
	缓冲队列200：用来缓冲执行任务的队列
	允许线程的空闲时间60秒：超过了核心线程数之外的线程，在空闲时间到达之后会被销毁
	线程池名的前缀：设置好了之后可以方便我们定位处理任务所在的线程池
	线程池对拒绝任务的处理策略：此处采用了CallerRunsPolicy策略，当线程池没有处理能力的时候，该策略会直接在execute方法的调用线程中运行被拒绝的任务；如果执行程序已被关闭，则会丢弃该任务
	设置线程池关闭的时候等待所有任务都完成再继续销毁其他的Bean
	设置线程池中任务的等待时间，如果超过这个时候还没有销毁就强制销毁，以确保应用最后能够被关闭，而不是阻塞住
	* */
	@EnableAsync
	@Configuration
	class TaskPoolConfig {
		@Bean("taskExecutor")
		public Executor taskExecutor() {
			ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
			executor.setCorePoolSize(10);
			executor.setMaxPoolSize(20);
			executor.setQueueCapacity(200);
			executor.setKeepAliveSeconds(60);
			executor.setThreadNamePrefix("taskExecutor-");
			executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
			executor.setWaitForTasksToCompleteOnShutdown(true);
			executor.setAwaitTerminationSeconds(1500);
			return executor;
		}
	}
}
